Yellow tang fin

[jorgeeandreess]

Hey guys I have my yellow tang he is domingo good since 1+ week I bought it. He is eating a lot of food and algae and is very very active but since yesterday I realized “cuts” on his fins. Help me please

Sal: 1.025
NO3: 12
PO4: 0.2

 

[Dom]

@vetteguy53081 @Jay Hemdal

 

[blecki]

I see the tail of another zebrasoma tang. Seems pretty safe to bet on aggression.

 

[Sharkbait19]

I agree - with split fins, aggression is generally going to be my first guess. Keep an eye on the situation, if it worsens you may have to separate fish.

 

[exnisstech]

What other fish are in the tank? Those look like tail smacks from another tang with a scalpal. Mine get them occasionally and they heal so not really an emergency.

 

[vetteguy53081]

Hey guys I have my yellow tang he is domingo good since 1+ week I bought it. He is eating a lot of food and algae and is very very active but since yesterday I realized “cuts” on his fins. Help me please

Sal: 1.025
NO3: 12
PO4: 0.2

This is fin aggression and you need to identify the aggressor. Best time is at feeding and drop food and set your cell phone on video for 15 minutes and walk away- You MUST walk away as they know youre there. Come back and review video. Isolation will be necessary for aggressor temporarily. Can be a clown, another tang or occupant

 

[jorgeeandreess]

I see the tail of another zebrasoma tang. Seems pretty safe to bet on aggression.

What can I do? Do I

This is fin aggression and you need to identify the aggressor. Best time is at feeding and drop food and set your cell phone on video for 15 minutes and walk away- You MUST walk away as they know youre there. Come back and review video. Isolation will be necessary for aggressor temporarily. Can be a clown, another tang or occupant

thank you so much !

 

[Jay Hemdal Verified Community Expert]

Hey guys I have my yellow tang he is domingo good since 1+ week I bought it. He is eating a lot of food and algae and is very very active but since yesterday I realized “cuts” on his fins. Help me please

Sal: 1.025
NO3: 12
PO4: 0.2

Rarely can I say some fish issue is 100% caused by something, but 100% this is tankmate aggression.

What other fish are in the tank? As mentioned, the other Zebrasoma in the pic is the likely suspect.

The issue will be - do you wait to see if things settle down (and take the risk of the yellow tang being killed) or do you separate the tang now?